ipfw setup and keep-state - BSD

This is a discussion on ipfw setup and keep-state - BSD ; Hello
I have rules:
${fwcmd} add check-state
..........
${fwcmd} add pass all from 192.168.0.0/16 to any setup keep-state
#ipfw show (only part)
00800 0 0 check-state
02800 66541052 38936418331 allow ip from 192.168.0.0/16 to any keep-state
The question is: i ...